array problem

[kishore2k9]

hi,

how to find in array that array keys contains special characters,punctuations only with alphabetic charaacters in each array key
ex: $array1=array("kish"=1,"kumar"=3,"nagesh"=5,"ok-fine"=8,"then-what"=3);
in the abve array example my requirement problem is :
in the above array data,
how to find which array key contains specail characters ex in above is :"ok-fine"
if key contains special characters,punctuations with alphabetic characters in each array key i find that

[r035198x]

Use regular expressions

[Markus]

Here's something I kicked up (please read up on regexp's as mentioned in Ro's post).

// comments are explanations

<?php
 
/* We set an array with some offending array keys */
$styles = array( 'summer' => 'skirts', 'summer-autumn' => 'browns and furr', 'autumn' => 'greys and hoodys', 'autumn-winter' => 'suits' );
 
 
/* Next we define a regular expression. What this expression does is check for anything OTHER THAN a-z (both uppercase and lower) and 0-9 */
$exp = '/[^a-zA-Z0-9]/';
 
 
/* This is optional; it was just something to show the offending array keys */
$outcasts = array();
 
 
/* Now we use a foreach loop to traverse the array, setting the array key as $key and the value as $style. */
foreach( $styles as $key => $style )
{
    /* Now for the 'preg_match' - these are used with regular expressions (like we're using. So, what we're saying is 'if preg_match returns true' (array key is bad!) ... */
    if ( preg_match( $exp, $style ) )
    {
            /* Stick it in the outcasts array */
        $outcasts[$key] = $style;
    }
}
 
echo '<pre>';
print_r( $outcasts );
 
?>
 

Hope this is helpful!